Veneer-cutting machine



(No Mndel.) 2 Sheets-Sheet 1.

J. J. HAYES.

VENEER CUTTING MAGHINE. No. 497,958. Patented May 23, 1893.

(No Model.) 2 Sheets-Sheet 2.

J. J. HAYES. VENEER GUTTING MACHINE.

No. 497,958. Patented May 23, 1893.

UNITED STATES PATENT OFFICE.

JOHN J. HAYES, OF FLUSI'IING, ASSIGNOR TO THE JOHN HAYES MACHINECOMPANY, OF BROOKLYN, NEW YORK.

VENEER-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 497,958, dated May 23,1893. Application filed November 7, 1892- Serial No. 451,135. (Nomodel.)

To all whom it may concern:

Be it known that I, JOHN J. HAYES, a citizen of the United States,residing at Flushing, in the county of Queens and State of New York,have invented an Improvement in Veneer- Cutting Machines, of which thefollowing is a specification.

Machines have heretofore been constructed in which the log or block fromwhich the veneers are cut, receives an up and down movement, and theveneer is shaved off by the action of a knife on the down stroke and themovement given to the log is such that the knife operates with a slightshearing cut, the log receiving a slight endwise movement as it iscarried downwardly, and the cutter or knife has been held in end framesthat support the knife stock, and these end frames and stock have beensupported upon slide blocks and moved by feed screws, and the end frameshave been adjusted by screws bearing upon the slide blocks as seen in mypatent, No. 467,57 7, granted January 26, 1892. Difficulty has howeverarisen in the construction of the parts, because the castings have beenliable to spring in cooling and in case of necessary repairs or when adifferent stock has been required, the end frames have necessarily beenchanged and the expense of so doing augmented. In the presentimprovements the knife stock is so received into and connected with theend frames as to be separable, thereby allowing for changing the knifeand knife stock as may be required from time to time and the splay ironor throat-piece is adjusted in such a manner as to easily vary thethickness of the veneer that is being cut, and the whole of themechanism connected with the knife is capable of being displaced shouldthe log become separated from the moving head block and fall against theknife, whereby injury to the parts is avoided.

In the drawings, Figure 1 is an end view of the frame and the partsconnected therewith. Fig. 2 is a cross section of the bed and anelevation of the knife stock and frame at one end of said knifestock.Fig. 3 is an elevation, and Fig. 4 a plan of one end frame detached.

In veneer cutting machines it has heretofore been usual to provide twoslides which are parallel to each other, and one of these slides isrepresented at A and mounted on each slide is a feed screw B, and thesefeed screws are geared together so as to revolve in unison, and suchfeed screws act upon slide blocks, one of which is shown at 0, hencethese slide blocks and the knife which is carried by the apparatus aremoved toward or from the log, and I have represented at D a head block,and at E the log holder, and it is to be understood that this log holderis moved up and down and carries with it the log in the usual manner,and the mechanism for actuating this logholder being well known does notrequire further description.

Upon each slide block is an end frame F that is represented in thedetached views 3 and 4, and these end frames are similar but handed ormade the reverse one of the other, and in each frame is a recess 2 forthe reception of the end of the knife stock G, the frame itself beingmade in the form of a three sided box with a bottom upon which the knifestock rests, and there are bolts 3 passing through the end frame intothe end of the knife stock and by which the parts are firmly connected,but by the removal of these bolts 3 the knife stock can be separatedfrom the end frames and another knife stock and knife introducedwhenever required.

I find it advantageous to make the under side of the knife stock at itsends that bear upon the end frame F at the bottom of the recesses,slightly convex and the width of the knife stock at its ends is lessthan the width of the recess 2, hence the knife stock can be rolled ormoved upon its bearings within the recesses 2, and to allow of thismotion the slots for the bolts 3 are sufficiently elongated and by thisconstruction I am enabled to bring the edge of the knife H eithervertical or ata greater or less inclination to the surface of the blockfrom which the veneer is being out, and I make use of wedges or fillingplates at within the recesses 2 at the front and back of the knife stockat the ends thereof that are within such recesses, whereby the knifestock and backwardly upon such slide blocks, and, secend, the screws 5resting upon the surfaces of the slide blocks allow for the back ends ofthe frames F being slightly raised or lowered to adjust'the position ofthe knife H in relation to the log that is being out without varyingtheconnections between theknife stock and the end frames, and thisadjustment by the screws 5 can be performed while the machine is inoperation if it becomes necessary, but in'case of the log or blockbecoming disconnectedfrom the log holder E and falling, the knife stockand end frames may be displaced, the pressure of the log causing'thescrews 6 to slip out of their recesses in the slide blocks, butinpractice I have found that the weight of the knife stock and endframes is sufficient to hold the parts firmly while cutting the vekneer, because the pressure of the log againstthe knife is downwardly'andserves to hold the parts firmly upon the slide blocks.

The splay iron or throat-piece I extends across above the knife and itsface is pressed against the surface of the block that is being cut,hence the distance between the lower end of the splay iron and thecutting edge of the knife regulates the thickness of the veneer that iscut from the log, and it is advantageous for the surface of this splayiron to be inclined backwardly from the log, as represented, in orderthat the splayiron may only touch the log at a line adjacent tothecutting point. The ends 7 of the splay iron extend over the end framesF, and I find it advantageou's to employ the'secondary end frames F inthe form of supporting blocks that rest upon the main end frames F andare bolted thereto,

and each of these second'ary end frames is provided with a verticalflange or lug 8 through which passes the adjusting screw 14 which isprovided with a lock nut and the end of the screw 9 presses against theend 7 of the splay iron I; and I make use of a clamping bolt 10 passingthrough a slot in the end 7 of thesplay iron and two adjusting screws 11and 12 at opposite sides of the clamping'bolt 10. It will now beunderstood that by slackening the nut of the clampingbolt 10 the splayiron can be moved by the screw 9 so that the edge of its face is nearerto or farther from the edge of the knife H to regulate the thickness ofthe veneer, and by the screws 11 and 12 the inclination of the face ofthe splay iron can be varied as desired and the splay iron can be eitherraised or lowered to regulate the vertical position of the lower edge ofthe splay iron in relation to thecutting edge of the knife, and afterthese adjustments have been made the nuts of the clamping bolts 10 areto be set up tightly to hold the splay iron firmly in position for use.

I claim as my invention- 1. The combination with the knife and its stockin a veneer cutter, the slides, feed screws and slide blocks, of endframes formed with recesses for the reception of the ends of the knifestock, and bolts for connecting the end frames and knife stock,substantially as set forth. I l r y 2. The combination with the knifean'dits stock in a veneer cutter, the slides, feed screws and slideblocks, of end frames formed with recesses for the reception of theends, of the knife stock, and bolts for connectin'g'the end frames andknife stock, the recesses in the end frames being larger than the endsof the knife stock, and 'wedges'or plates introduced between the ends ofthe knife stock and'the end frames for holding the knife stock in itsproper position in relation to the end frames, substantially as setforth. i, g 3. The combination 'with'the knife and its stock in a veneercutter, the slides, feed screws and slide blocks, of end frames formedwith recesses for the reception of the ends of the knife stock, boltsfor connecting the end frames and knife stock, adj ustingscrews passingthrough the end frames and resting upon the slide blocks, one of whichadjusting screws in each end frame'passe's into a recess in the slideblock, substantially as set forth.

4. The combination with the knife'and its stock in a veneer cutter, theslides, feed screws and slide blocks, of end frames formed'i'vithrecessesfor the reception of the ends of the knife stock, bolts forconnecting the end frames and knife stock, adjusting screws passingthrough'the end frames and resting upon the slide blocks, oneof whichadj usting'screws in each end frame'passes into a recess in the slideblock, a splay ironextending across above the knife and having endsthat'pass over the end frames and adjusting screws and clamping boltsfor adjusting the position of the splay iron in relation to theknife'and holding the same, substantially as set forth.

5. The combination with the knife and its stock in a veneer cutter, theslides, feedscrews and slide blocks, of end frames formed with recessesfor the reception of the'ends of the knife stock, bolts for connectingthe end frames and knife stock, adjusting screws passing through'th-eend frames'and resting upon the slideblocks, one of which adj ustingscrews ineach end frame passes into a recess in the slide block, a splayiron extending across above the knife and having ends that pass same tothe auxiliary frames, substantially as over the end frames andintermediate auxilset forth. 1o iary frames bolted to the top of the endframes Signed by me this 29th day of October,

and provided with flanges or lugs, adjusting 1892.

5 screws passing through such flanges or lugs, JOHN J. HAYES.

and clamping and adjusting screws passing Witnesses: through theprojecting ends of the splay iron ALONZO W. FISK, J12, for adjustingsuch splay iron and holding the FREDERICK KNOOHER.

